I have the same issue with a 803a, drops load at 34 amps and my load meter is only reading 20%. That project is on the back burner right now since I have 003a with issues that I need to get resolved first. One thing on the 003a, the load meter was not working correctly and I sprayed the phase select switch (reconnection switch) with WD-40, then worked it between positions about 20 times and then the load meter started working correctly. It was very hard to move between positions (same as the 803a), and after 20 times of moving it, it moved freely. So I'm beating if I do the same thing to the 803a, everything will work correctly. From the wiring diagram, load sensing goes through the am/vm connector, burden resistors, and the phase selector switch.My load meter isn't working yet, so I wonder if that is somehow related to the issue with the breaker tripping? The engine is having no issue handling the load. I just get a puff of black smoke right when I bring the load online, and then it goes about its business.
I'll see if I have some contact cleaner and I'll try spraying the AM/Vm switch and the phase select switch with it, and see if that gets the load meter going and resolves the issue. Moving both of those switches back and fourth is what got the volt meter going.
The "burden resistors" all appear to be in great condition on this unit. Some of the other 802 units I have appear to have had some work done in that area.
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